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Topological Rainbow Concentrator Based on Synthetic Dimension
- 发表刊物：Physical Review Letters
- 摘要：Synthetic dimension provides a new platform for realizing topological photonic devices. Here, we propose a method to realize a rainbow concentrator of topological photonic states based on the synthetic dimension concept. The synthetic dimension is constructed using a translational degree of freedom of the nanostructures inside the unit cell of a two-dimensional photonic crystal. The translational deformation induces a nontrivial topology in the synthetic dimension, which gives rise to robust interface states at different frequencies. The topological rainbow can trap states with different …
- 论文类型：期刊论文
- 卷号：126
- 期号：11
- 页面范围：113902
- 是否译文：否
- 发表时间：2021-03-19
